Car jacking and axle stand points

[Bryn]

You can't argue with those chocks at that price, the Halfords page says suitable for 16" wheels, I assume no issues with the 17"'s on the DS3 ?

AFAIK the rolling diameter of both sizes of wheel are the same, but the 17" ones wear lower profile tyres. Thus the chocks should fit both. (In any case, I doubt it's that critical - Halfords say they're OK for 16" wheels but if it mattered that much, they'd also need to specify the tyre spec).